摘要
锂离子电池比能量高,循环寿命长,具有高稳定性,已应用于各个领域。研究高功率锂离子电池放电倍率对容量的影响,对不同放电倍率的高功率锂离子电池进行容量测试,明确高功率锂离子电池的容量衰减问题,得到不同倍率下循环使用后高功率锂离子电池的容量和电压曲线。采用混合功率脉冲特性方法对高功率锂离子电池内阻进行测试和计算,分析结果表明,高功率锂离子电池在高荷电状态下内阻伴随放电率的提高而减小,在较低荷电状态下内阻则呈现出一定的复杂趋势。通过研究,可以促进高功率锂离子电池的应用。
The lithium-ion battery has high specific energy,long cycle life,high stability,and has been used in various fields.The influence of discharge rate of high-power lithium-ion battery on capacity was studied,and the capacity test of high-power lithium-ion battery with different discharge rate was carried out,the capacity attenuation problem of high-power lithium-ion battery was clarified,and the capacity and voltage curves of high-power lithium-ion battery after recycling at different rate were obtained.The internal resistance of high-power lithium-ion battery was tested and calculated by the hybrid power pulse characteristic method,and the analysis result shows that the internal resistance of high-power lithium-ion battery decreases with the increase of discharge rate in the high charge state,and the internal resistance in the lower charge state shows a certain complex trend.Through research,the application of high-power lithium-ion battery can be promoted.
出处
《机械制造》
2023年第8期1-4,17,共5页
Machinery
基金
中国北马其顿双边政府间人员交流项目(国科外[2019]22号)
辽宁省校际合作重点研发项目(辽教发[2020]28号)。
关键词
锂离子电池
放电倍率
容量
影响
研究
Lithium-ion Battery
Discharge Rate
Capacity
Influence
Study
作者简介
杨斌(1997-),男,硕士研究生,主要研究方向为电池电性能和热量;樊立萍(1965-),女,教授,主要研究方向为电池功率与同步发电技术。
